Currently, coalescing parameters are grouped for all transmit and receive virtqueues. This patch series add support to set or get the parameters for a specified virtqueue. When the traffic between virtqueues is unbalanced, for example, one virtqueue is busy and another virtqueue is idle, then it will be very useful to control coalescing parameters at the virtqueue granularity. Example command: $ ethtool -Q eth5 queue_mask 0x1 --coalesce tx-packets 10 Would set max_packets=10 to VQ 1. $ ethtool -Q eth5 queue_mask 0x1 --coalesce rx-packets 10 Would set max_packets=10 to VQ 0. $ ethtool -Q eth5 queue_mask 0x1 --show-coalesce Queue: 0 Adaptive RX: off TX: off stats-block-usecs: 0 sample-interval: 0 pkt-rate-low: 0 pkt-rate-high: 0 rx-usecs: 222 rx-frames: 0 rx-usecs-irq: 0 rx-frames-irq: 256 tx-usecs: 222 tx-frames: 0 tx-usecs-irq: 0 tx-frames-irq: 256 rx-usecs-low: 0 rx-frame-low: 0 tx-usecs-low: 0 tx-frame-low: 0 rx-usecs-high: 0 rx-frame-high: 0 tx-usecs-high: 0 tx-frame-high: 0 Gavin Li (3): virtio_net: extract interrupt coalescing settings to a structure virtio_net: support per queue interrupt coalesce command --- changelog: v1->v2 - Addressed the comment from Xuan Zhuo - Allocate memory from heap instead of using stack memory for control vq messages v2->v3 - Addressed the comment from Heng Qi - Use control_buf for control vq messages v3->v4 - Addressed the comment from Michael S. Tsirkin - Refactor set_coalesce of both per queue and global config that were littered with if/else branches --- virtio_net: enable per queue interrupt coalesce feature drivers/net/virtio_net.c | 187 ++++++++++++++++++++++++++++---- include/uapi/linux/virtio_net.h | 14 +++ 2 files changed, 177 insertions(+), 24 deletions(-) -- 2.39.1
